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United States – Leadis Technology Inc. has announced sample availability of the LDS8842 and LDS8830, the second and third in its new series of LED drivers that feature a 1.33x-mode enabled charge pump. Designed for mobile backlighting applications, the LDS8842 and the LDS8830 support up to four and three LEDs, and with maximum current supply of 25mA and 32mA per channel, respectively.

The drivers integrate an additional charge pump mode that generates an output voltage equal to 1.33 times the input voltage. The 1.33x pump mode serves as a higher-efficiency intermediate mode between the 1x and 1.5x modes, resulting in efficiency improvements of up to 10 percent over traditional models. Compatible with input voltages ranging from 2.5V to 5.5V, these devices provide up to 92 percent efficiency with no added external capacitors as compared to conventional 1.5x charge pumps.

The LDS8842 is offered in a 16-lead thin QFN 3mmx3mm package with a maximum height of 0.8mm. The LDS8830 is available in a 12-lead XQFN 2.5mmx2.5mm with a maximum height of 0.4mm or in a 16-lead TQFN or 12-lead TDFN 3mmx3mm package with a height of up to 0.8mm

The higher efficiencies possible with our 1.33x technology provide customers with an additional means to increase battery life for their mobile offerings, enabling product differentiation and an enhanced consumer satisfaction, said Donato Montanari, vice president and general manager of LED Drivers at Leadis Technology.